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ref-manual: Edits to the using an external toolchain question.

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(From yocto-docs rev: 8fc82c1dfc527cf8356bed580077cb9e6f665876)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Scott Rifenbark
2013-03-29 09:30:27 -07:00
committed by Richard Purdie
parent 59bc5009a0
commit b866355f61
1 changed files with 30 additions and 14 deletions
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44
documentation/ref-manual/faq.xml
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@@ -514,30 +514,46 @@
<para>
The toolchain configuration is very flexible and customizable.
It is primarily controlled with the
<filename><link linkend='var-TCMODE'>TCMODE</link></filename> variable.
This variable controls which <filename>tcmode-*.inc</filename> file to include
from the <filename>meta/conf/distro/include</filename> directory within the
<ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>source directory</ulink>.
<filename><link linkend='var-TCMODE'>TCMODE</link></filename>
variable.
This variable controls which <filename>tcmode-*.inc</filename>
file to include from the
<filename>meta/conf/distro/include</filename> directory within
the
<ulink url='&YOCTO_DOCS_DEV_URL;#source-directory'>Source Directory</ulink>.
</para>
<para>
The default value of <filename>TCMODE</filename> is "default"
(i.e. <filename>tcmode-default.inc</filename>).
However, other patterns are accepted.
In particular, "external-*" refers to external toolchains of which there are some
basic examples included in the OpenEmbedded Core (<filename>meta</filename>).
You can use your own custom toolchain definition in your own layer
(or as defined in the <filename>local.conf</filename> file) at the location
In particular, "external-*" refers to external toolchains of
which there are some basic examples included in the
OpenEmbedded Core (<filename>meta</filename>).
You can use your own custom toolchain definition in your own
layer (or as defined in the <filename>local.conf</filename>
file) at the location
<filename>conf/distro/include/tcmode-*.inc</filename>.
</para>
<para>
In addition to the toolchain configuration, you also need a corresponding toolchain recipe file.
This recipe file needs to package up any pre-built objects in the toolchain such as
<filename>libgcc</filename>, <filename>libstdcc++</filename>,
any locales, and <filename>libc</filename>.
An example is the <filename>external-sourcery-toolchain.bb</filename>, which is located
in <filename>meta/recipes-core/meta/</filename> within the source directory.
In addition to the toolchain configuration, you also need a
corresponding toolchain recipe file.
This recipe file needs to package up any pre-built objects in
the toolchain such as <filename>libgcc</filename>,
<filename>libstdcc++</filename>, any locales, and
<filename>libc</filename>.
An example is the
<filename>external-sourcery-toolchain.bb</filename>, which is
located in <filename>meta/recipes-core/meta/</filename> within
the Source Directory.
</para>
<para>
For information on installing and using cross-development
toolchains, see the
"<ulink url='&YOCTO_DOCS_ADT_URL;#installing-the-adt'>Installing the ADT and Toolchains</ulink>"
section in the Yocto Project Application Developer's Guide.
</para>
</answer>
</qandaentry>